Amarine-made Stainless Steel Cup Drink Holder with Drain Marine Boat Rv Camper Stainless steel self draining recessed cup holder , Install almost anywhere; table, counter top, dashboard, seatback, etc. Replaces plastic drop-in cup holders with ease. Made of stainless steel for supreme corrosion resistance. Includes drain with hose barb, mounting gasket and internal pad. Dimensions: 4" H - 3 1/2"ID, 4 1/4" OD, with flange.